.wrap {
    width: 40px;
    height: 40px;
    line-height: 40px;
    color: #fff;
    background: rgba(255, 168, 8, 1);
    box-shadow: 0 0 8px 0 rgba(0, 0, 0, 0.15);
    border-radius: 8px 0 0 8px;
    position: fixed;
    z-index: 999;
    bottom: 168px;
    right: 0;
    text-align: center;
    transition: all 0.3s;
    cursor: pointer;
}
